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Related Modules:
Description:
Declares network data buffers and provides APIs for operating buffer queues.
This file describes the following network data operations for network device driver development: Applying for, releasing, and moving a network data buffer Initializing a network data buffer queue, placing a network data buffer to a queue, and removing a network data buffer from a queue
Since:
1.0
Version:
1.0
Defines the reserved field of a network data buffer used to store private information. |
NetBufQueueInit (struct NetBufQueue *q) |
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NetBufQueueSize (const struct NetBufQueue *q) |
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NetBufQueueIsEmpty (const struct NetBufQueue *q) |
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NetBufQueueEnqueue (struct NetBufQueue *q, struct NetBuf *nb) |
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NetBufQueueEnqueueHead (struct NetBufQueue *q, struct NetBuf *nb) |
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NetBufQueueDequeue (struct NetBufQueue *q) |
struct NetBuf * Obtains a network data buffer from the header of a queue and deletes it from the queue. |
NetBufQueueDequeueTail (struct NetBufQueue *q) |
struct NetBuf * Obtains a network data buffer from the tail of a queue and deletes it from the queue. |
NetBufQueueAtHead (const struct NetBufQueue *q) |
static struct NetBuf * Obtains the network data buffer from the header of a queue, without deleting it from the queue. |
NetBufQueueAtTail (const struct NetBufQueue *q) |
static struct NetBuf * Obtains the network data buffer from the tail of a queue, without deleting it from the queue. |
NetBufQueueClear (struct NetBufQueue *q) |
Clears a network data buffer queue and releases the network data buffer in the queue. |
NetBufQueueConcat (struct NetBufQueue *q, struct NetBufQueue *add) |
Moves all network data buffers from one queue to another and clears the source queue. |
NetBufAlloc (uint32_t size) |
struct NetBuf * |
NetBufFree (struct NetBuf *nb) |
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NetBufDevAlloc (const struct NetDevice *dev, uint32_t size) |
struct NetBuf * Applies for a network data buffer based on the reserved space and requested size set by a network device. |
NetBufPush (struct NetBuf *nb, uint32_t id, uint32_t len) |
Performs operations based on the segment ID of a network data buffer. The function is opposite to that of NetBufPop. |
Performs operations based on the segment ID of a network data buffer. The function is opposite to that of NetBufPush. |
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NetBufGetAddress (const struct NetBuf *nb, uint32_t id) |
Obtains the address of a specified buffer segment in a network data buffer. |
NetBufGetRoom (const struct NetBuf *nb, uint32_t id) |
Obtains the size of a specified buffer segment space in a network data buffer. |
NetBufGetDataLen (const struct NetBuf *nb) |
Obtains the actual data length of the data segment of a network data buffer. |
NetBufResizeRoom (struct NetBuf *nb, uint32_t head, uint32_t tail) |
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NetBufConcat (struct NetBuf *nb, struct NetBuf *cnb) |
Copies data in a network data buffer to another network data buffer. |
Pbuf2NetBuf (const struct NetDevice *netdev, struct pbuf *lwipBuf) |
struct NetBuf * Converts the pbuf structure of Lightweight TCP/IP Stack (lwIP) to a network data buffer. |
NetBuf2Pbuf (const struct NetBuf *nb) |
Converts a network data buffer to the pbuf structure of Lightweight TCP/IP Stack (lwIP). |
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